Improvement in valve-motions



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i SIMON INenRsoLL, on BROOKLYN, NEW YORK.

IMPROVEMENT INVALVE-MOTIONSY. v

g Specification forming part of Letters Patent No. 115,478, dated May 30, 1871.

. the steam-chest attached. 1 Fig. 4 shows the opposite side of the cylinder and steam-chest to Fig. 3.`

My inventionhas reference more particularly1to machinery for workingrock-drills, such as was patented to me by Letters Patent bearing date February 28, 187,1; and consists of a new and peculiar `valve-motion controlled and regulated by beveledftappets `Workin g into the cylinder. i

In order that others skilled in the art may use and understand my invention, I will proceed to explain how I have' carrried it out.

K is a tappetlever,the motions ofwhich `are regulated and controlled by the beveled tappets k k, operated on, alternately, by the piston l?. The beveled ends of the tappets pass into the cylinder G just far enough to allow the beveled or inclined edges of the piston to strike alternately against the bevel or incline Q, Fig. 1, on the inner ends of the tappets, thus giving motion to the tppet-lever K. The bent lever H is attached at one end to the tappet-lever K, and at the other end to the valve-stem 9, as shownin Fig. 4.

` It is evident the motion of thetappet-lever K will give a lateral motion to thebent lever H, andthus cause the valve-stem 9 to slide within the steam-chest F, which is constructed after the usual manner of constructing steam-chests, in which 6 and 7 are ports, and 8 is an exhaust-port.

AHaving thus described my invention, what I claim as new, and desire to secure by Letters Patent, is y The tappet-lever K, with itsl beveled tappets k,=in combination with the piston P and bent lever H, to give motion to the valve-stem 9, and'cause it to slide within the steam-chest F,.substantially as and for the lpurpose set forth.

y SIMON INGERSOLL.

Witnesses v A. H. EVANS, FREDERIOK ZHIMER. 

